We all know Google builds their own server hardware. From what Google has learned building their own servers, could they get in the server business selling Google appliances for those who want to own the infrastructure and not go to the cloud.

Why would I think this could happen because I took a look at Google's platform jobs and saw 2 EMC (electromagnetic compliance) job openings which would typically be done for regulatory approvals like EN, FCC, VCCI, ETSI, CISPR, Telcordia etc

Here is the list of Google job openings in the platform group. The EMC jobs are #2 and #3.